--- old/test/hotspot/jtreg/gc/shenandoah/TestRegionSampling.java	2020-04-04 02:23:25.338269846 +0200
+++ new/test/hotspot/jtreg/gc/shenandoah/TestRegionSampling.java	2020-04-04 02:23:25.227270873 +0200
@@ -58,6 +58,20 @@
  *      TestRegionSampling
  */
 
+/*
+ * @test TestRegionSampling
+ * @requires vm.gc.Shenandoah & !vm.graal.enabled
+ *
+ * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahRegionSampling
+ *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
+ *      TestRegionSampling
+ *
+ * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahRegionSampling
+ *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
+ *      TestRegionSampling
+ *
+ */
+
 public class TestRegionSampling {
 
     static final long TARGET_MB = Long.getLong("target", 2_000); // 2 Gb allocation